JPH10318299A - Modular brake with replaceable friction pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate replacement of a pad by forming a trapezoidal pad made of a friction material so that a wide base thereof is adjacent to a peripheral side of a disc and that a narrow base thereof is adjacent to a shaft of the rotary disc and that the pad is widened toward outside in the radial direction. SOLUTION: A pad 15 is formed into a nearly trapezoidal or wedge-like flat friction top surface, and has an inclined side surface 20 opposite to a wide base 18 and a narrow base 19 of the pad. A unit B is rotated outside, or the unit B is removed from a fitting body or a member, to which the unit B is fitted by a fitting bolt, so as to facilitate the check and replacement of a worn member, especially, a worn pad 15 of the friction material. A pulling tab member 22 is extended outward from a bad back plate 17 in the radial direction, riding over a wide base 18 on the pad 15, so as to facilitate the removal of the pad 15 of the friction material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION The present invention relates to a friction material pad which can be easily removed and replaced in a friction coupling mechanism.
The present invention relates to a modular assembly using such a friction material pad.

[0002]

BACKGROUND OF THE INVENTION Inventor's U.S. Pat. No. 5,178,23.
No. 5 (permitted January 12, 1993)
Brake and Clutch, the entire content of which is a reference to the present invention, wherein the aforementioned U.S. patent discloses that friction material is aerodynamically driven to promote contact between the piston and the disk supporting the cylinder assembly. A working piston and cylinder assembly is described. U.S. Pat. No. 3,964,583 (1976)
"Attaching Cylinders to Friction Brakes and Clutches," issued June 22, 2012) discloses a friction brake and clutch having a pivotable and removable unit with friction material pads, and replaceable parts. Indicates use. Axial mounting of devices for friction brakes and clutches is disclosed in U.S. Pat. No. 3,584,717 (June 1, 1971).
5696) and No. 3,696,900 (October 1972
(Permitted on March 10).

[0003]

Since the friction material pad according to the present invention has a shape that can accommodate different piston assembly structures, the friction material pad can be used not only for existing brakes and clutches, but also especially for friction material material. It can also handle piston and cylinder assemblies adopted for use with pads. Since the friction material pad is generally trapezoidal or wedge-shaped in a plane, when used in a brake or clutch, the broad base of the substantially trapezoidal friction material pad is used for the relatively rotating disk. Adjacent to the periphery, while the narrow base of the pad is adjacent to the axis of the rotating disk. This arrangement provides good friction brake contact and allows for a uniform distribution of frictional wear and force on the outer surface of the pad. The shape that expands radially toward the outside of the pad can distribute frictional force, that is, frictional wear force, more effectively than other pad shapes,
At the same time, the exchangeability of the pads becomes easier.

The friction material of the pad is fixed, preferably glued, to a flat backing, such as of steel, and is removably held by magnets on the front of the aerodynamically actuated piston. The pad is restrained in lateral movement by a torque post projecting from the torque collar, or by a pair of generally arcuate legs extending forward from the torque collar to tighten opposite sides of the pad.
According to the latter example, a one-piece or two-piece retainer clip made of steel prevents radial movement of the pad, but facilitates pad replacement or removal for inspection. The torque collar may have a profile that matches the profile of the clip and friction pad to properly tighten the clip and accurately position the pad.

[0005] The tab members on the back plate of the friction material pad extend beyond the wide base of the friction material, resulting in inspection or replacement of the pad if the torque post has been removed or the clip means is open. To move the pad by hand, without any tools. The modular friction coupling mechanism with easily replaceable friction material pads of the present invention can be used in existing equipment used in a wide range of industrial applications, including web processing operations and paper making, or as a new equipment. Can be arranged.

[0006]

SUMMARY OF THE INVENTION In one embodiment, a friction pad is secured to a collar, and the collar and the pad are coupled to a module base that can be used for a different size brake assembly. The module includes a profiled side having an air port and an air passage leading to a central piston assembly. In the brake assembly,
The modules are coupled to adjacent modules and move air between the modules by matching an air port on one module to an air port on an adjacent module.

In another embodiment, a portion of the plate to which the friction pad is attached includes a bore corresponding to a surface facing the piston assembly. The bore allows indexing of the pad by an indexing mechanism on the piston assembly to prevent movement of the pad relative to the piston assembly and maintain proper alignment.

[0008]

DETAILED DESCRIPTION OF THE INVENTION FIG. 1 shows U.S. Pat.
83 shows a friction member having a unit or module B of the general type disclosed and described in US Pat. Unit B, which can be an aluminum casting, has shared orthogonal slots L and R at both ends for pivotable and removable movement of unit B relative to mounting pins (not shown). When mounted on a brake, the side of unit B, shown at the top of FIG. 1, faces the relatively rotatable disk, so that upon actuation of the piston of the piston and cylinder assembly supported by the unit. In addition, the friction material pad is stressed into contact with the opposing surface of the disk to exert a frictional force on the disk to stop the relative rotational movement of the disk. The operation of such a brake is disclosed in U.S. Pat.
No. 17, No. 3,696,900, No. 3,964,58
No. 3 and 5,178,235. Unit B shown in FIG. 1 can support two piston and cylinder assemblies, but for simplicity, a single piston and cylinder assembly represented by reference numeral 10 is illustrated. 1 is shown. The piston, the cylinder and the friction material pad of the present invention can also be used for a clutch.

The piston and cylinder assembly 10 shown in FIGS. 1 and 5 generally includes a cylinder base plate 11, a piston assembly 12, shown as a bulkhead piston assembly, and a torque collar 1.
3 and an upright cylindrical torque post 14. The screw (not shown in FIG. 1) has a torque post 14,
The collar 13, the piston assembly 12, and the cylindrical base plate 11 are fixed to the unit B.

[0010] Torque posts 14 spaced 180 ° from each other on torque collar 13 prevent lateral movement of the friction material pad, generally designated by reference numeral 15 in the drawings. The pad 15, which is substantially trapezoidal in plan, comprises a compact unit of abrasion-resistant, heat-resistant, organic or synthetic friction material 16, said pad being fixed to a backing plate 17 made of a fibrous material, preferably a steel plate, preferably Are fixed by adhesive means. Pad 15 is flat with a generally trapezoidal or wedge-shaped flat friction top surface and has a wide base 18, a narrow base 19 and side surfaces 20 that are inclined toward each other.

FIG. 1 further shows a permanent magnet 21 which is ring-shaped, preferably made of a composite of refractory ceramics, is mounted concentrically around the front face of the piston assembly 12 and is made of friction material. Pad back plate 17
As a result, the friction material pad 15 can be detachably held. When air under pressure is introduced into the chamber of the piston and cylinder assembly 10, the piston 12 moves forward (upward in FIG. 1) and comes into frictional contact with a friction disc that is rotatable relative to the piston and cylinder assembly. As a result, the front surface of the pad friction material 16 is pressed to exert a braking force on a relatively rotatable disk. In the embodiment of FIG. 1 in which the piston and cylinder assembly 10 shows one of the two assemblies supported by the unit B, the slots L and R of the unit B have interchangeable pads on a suitable mount. It allows for installation and the device acts as a brake or on its own rotatable member such that the device acts as a clutch.

The unit B is rotated outwardly around its one end, or from a mounting body or member to which the unit is mounted by mounting bolts (not shown) so as to approach the piston and cylinder assembly 10. By removing unit B, the above arrangement facilitates the inspection and replacement of worn parts, especially worn friction pad 15. The friction pad 15 is then inspected or replaced as needed.

To facilitate removal of the friction pad 15, a pull tab member 22 extends radially outwardly from the pad back plate 17 beyond the wide base 18 above the pad 15. The pull tab member 22 is preferably formed integrally with the extension of the flat back plate 17. The tension tabs 22 are provided with pads 15 after removal of the outer torque post 14 extending between the tension tab members 22.
It is preferable to have an upwardly bent lip 23 in order to grip while sliding outward. As shown in FIG. 1, the inner edge of the pull tab 22 has an arcuate portion 24,
When the apparatus of the embodiment of FIG. 1 is in the assembled state, the arcuate portion 24 is shaped to fit around a cylindrical torque.

FIGS. 2, 3, 4, 10 and 11 show another embodiment of the device according to the invention, in which a friction material pad 1 is shown.
5 is held against lateral movement by different means than the torque post 14 shown in FIG. In the embodiment of FIG. 2, the torque collar 33 is
3 have two upright torque legs 34 and 35 formed planarly as arcs of a circle forming the perimeter. As with the torque collar 13 of FIG.
Has a plurality of holes for receiving screws for mounting to a cylinder, and in the case of a torque collar 33, two of the screw receiving holes are shown passing through torque legs 34 and 35. Inner surfaces 34a, 35a of legs 34 and 35
Are inclined toward each other at an angle corresponding to the angle formed by the side surface 20 of the friction material pad 15 having a trapezoidal shape,
As a result, the pad 15 is connected to the torque legs 34 and 3 while its inner surfaces 34a, 35a contact the side 20 of the unit.
It is received exactly between five.

Using the torque collar of the embodiment of FIGS. 2, 3, 4, 10, and 11 allows for still other applications to the embodiment of FIG. 2, as with the torque collar of FIG.
There is no need to remove the torque post to slide the friction pad 15 out of its operating position. Instead of being held radially outwardly by the torque posts, the friction pad 15 of the embodiment of FIGS. 2, 3, and 4 has a pair of similar pads as shown in FIGS. A retainer made of a springy material such as a stainless steel spring which can be a two-piece clip comprising a retainer clip member 37 or a one-piece retainer clip comprising a continuous band 38 shown in FIG. -It is restrained by the clip 36. The retainer clip 36 in the embodiment of FIGS. 2, 6 and 7 passes through the retainer clip in a row of threaded holes in the legs 34, 35 as shown in FIG. Torque leg 3 with screw
4, 35 with holes for attachment of the retainer clips 36 on the outside surface.

Near the open outer end of the retainer clip 36, along the arc of a circle formed by the distorted portion of the retainer clip 36 so as to be located in front of the base 18 of the friction pad 15. There is an inwardly bent portion 39 that is substantially disposed. The outer end of each side of the retainer clip 36 is bent backwards to provide a pair of opposed clip tabs 40 to release the retainer clip 36 for sliding the friction material pad 15 out. The clip tabs 40 can be pushed apart from each other to expand to open the retainer clip 36, thereby causing the pad 15 to slide out. In a preferred embodiment, the pad 15 is manually removable without the aid of a tool. 6 and 7 show the retainer clip 36 with the pad held or closed,
The dash-dotted line shows the retainer clip 36 in an open state that allows the pad 15 to be slid off.

FIG. 3 shows the torque collar 33 of FIG. 2 with the friction material pad 15 assembled with the torque legs 34, 35 and the pad held in place by a two-piece retainer clip 36. The machine screw head 41 passing through the torque legs 34, 35 and the inner end 42 of another torque collar machine screw are shown in FIG. 3 and two of the retainer cup screws 43 are shown. .

As can be seen from the plan views of FIGS. 1, 2, 3 and 8, the friction material pad 15 disclosed in a substantially trapezoidal shape or a wedge shape has a pair of radially inwardly extending portions. 2, 3 and 4 and 11 have no torque post in the embodiment of FIGS.
When used in this embodiment, it has a generally U-shaped recess positioned therebetween to receive the inner one of the two torque posts therebetween. A similar U-shaped recess is provided between the tabs 22 extending beyond the wide base 18 of the friction material 16. The shape of the pad may be that used in any of the embodiments of the present invention, as long as the effective friction area of the pad 15 is not impaired.

Two different types of cylinders in which the piston assembly 12 of the present invention is used are illustrated in FIG. The use of the friction pad 15 of the present invention having the pivotable and removable unit B shown in FIG. 1 not only allows easy access to the friction pad 15 for inspection and replacement, but also the piston assembly. It will be understood that access to friction pad 15 is not required, although access to friction material pad 15 does not require the use of a pivotable and easily removable unit such as the unit shown in FIG.

As the piston assembly, for example, a cylinder 46 shown on the lower right side in FIG. 3 can be used for brakes and clutches as shown in US Pat. No. 5,178,235. Cylinder 4
6, unlike the cylinder illustrated in U.S. Pat. No. 5,178,235, has a fitting 47 for supplying air under pressure, the fitting 47 being provided in U.S. Pat.
It is attached to the front face 48 of the cylinder body 49 rather than the air supply fitting located below the cylinder at 78,235. A passage passing through the body 49 of the cylinder 46 supplies air to the cylinder chamber 50 through the inlet port 51. The shape of the body of the cylinder 46 is substantially wedge-shaped, so that a plurality of cylinders are arranged around a disc-shaped mounting plate or on a spider in order to obtain more frictional contact area. The cylinder 52 illustrated on the lower left side of FIG. 3 is disclosed in U.S. Pat.
5 is of the same type as that disclosed in FIG.

FIGS. 4 and 5 show two embodiments of a piston assembly according to the present invention. In both embodiments, a ring-shaped permanent magnet is used. The magnet 21a in FIG. 4 has a rectangular cross-sectional shape, and the magnet in FIG. 5 has a substantially square cross-sectional shape. The piston assembly of FIG. 4 is shown in FIGS.
The piston assembly of FIG. 5 corresponds to FIG.
The torque post 14 shown in FIG. As shown in FIG. 5, a small ring-shaped permanent magnet 54 is used to hold the pad 15 in a precise position.

FIGS. 4, 5, 8 and 9 have, in addition to being provided with a pulling tab 22, a metal tab 17 of a friction material pad provided with a central tab 55 having a lip 56 bent upward. . When the piston advances, when the lip 56 of the tab 55 comes into contact with the relatively rotating friction disk and the friction material 16 of the friction material pad becomes thin due to wear, a warning noise that the pad 15 should be replaced is generated. Center tab 55
Fires. In the preferred embodiment, the upwardly bent lip 23 of the pull tab 22 is positioned over the periphery of the friction disc so that it never contacts the relatively rotating disc, but does The bent lip 56 is located within the periphery of the relatively rotating friction disk. The upwardly bent lip 56 of the tab 55 is therefore preferably located close to the wide base of the substantially trapezoidal unit of friction material 16.

FIGS. 2, 3 with torque legs 34, 35;
FIG. 10, which is a top view of the torque collar 33 of FIG. 4, shows that the flat inner surfaces of the torque legs 34 and 35 substantially correspond to the angles formed by the side surfaces 20 of the trapezoidal shaped friction material pad 15. 30 ° to 45 °, preferably 33 ° to 3
It shows that it is inclined inward in the radial direction at an angle of 4 °. The friction material of the pad 15 does not contain asbestos, and is formed of a graphite-based material or a Kevlar or a harmless composite material having wear resistance and heat resistance.
Torque collars 13 and 33 are made of aluminum, thermoplastic composite, or other high strength plastic material. Piston assembly 12 is formed from metal or a rigid thermoplastic.

FIGS. 12, 13 (A), (B) and (C)
Shows another embodiment of the present invention, in which a friction material pad 61 is provided on a piston assembly 62 as shown in FIGS. 14, 15 (A) and (B). Accepted in module 60. Referring to FIG. 12, the pad 61 is similar to the pad 15 in the members 18, 19,
22, 23 and 24. The pad 61 also includes a pair of shoulders 79B that connect the ends of the narrow base 19 to the flat, sloped outer surface 80A. Flat and sloping outer surface 8
OB extends from the side surface 80A to the wide base 18. The base 18 of the pad 61 also includes a beveled portion 68 extending from a side edge of the base to an interconnect portion 69.

FIGS. 12, 13 (A), (B) and (C)
Referring to, a pad 61 is mounted on the periphery of the torque collar 33 and is received between two upstanding torque legs 64 and 65 forming the periphery. Leg 6
4, 65 are preferably structurally identical and collars 33
Are mounted symmetrically on top of each other so that their inner surfaces face each other. For ease of explanation, only the legs 65 will be described in detail below.

The leg 65 has a shoulder 71 at the top of the leg extending inward toward the center of the collar 33. Leg 6
The outer surface of 5 extends downwardly from collar 71 along the periphery of collar 33 and includes a ramped arcuate raised portion 70A terminating in slot 66. The arcuate portion 70B extends from the slot 66 along the periphery of the collar 33 to the bottom of the leg 65. The inner side surface of the leg 65 includes a concave portion 67 formed by one side surface by the inner surface of the shoulder portion 71 and the other side surface by the inclined portion 73A. A portion 73B that is inclined at a greater angle toward the center of the collar 33 than the portion 73A extends from the portion 73A toward the bottom of the leg 64 and terminates in a recess 73C. Recess 67 of leg 65
The recess 73 </ b> C is positioned by the mounting hole 68 of the collar 33. The inner surface of the shoulder 71 and the surfaces of the portions 73A and 73B provide the angular contour of the shoulder 79B and the outer surfaces 80A, 80B of the friction material pad 61 for accurate positioning of the pad 61 between the torque legs 64,65. And the portions 73A, 73B and the shoulder 71 are respectively provided on the side surfaces 80A, 80B and the shoulder 79B of the friction material pad 61.
Contact with.

Referring to FIGS. 12, 13 (B) and (C), module 60 includes a pair of matching retainer and clip members 76 made of the same material as clip 36 described above.
including. Clip member 76 includes members 39 and 40 and operates in the same manner as described above for clip 36 to hold pad 61 in place within collar 33. In order to positively hold the clip member 76 to the legs 64, 65 at the outer diameter of the collar 33 for securing the pad 61 to the module 60, the retainer clip member 76 includes an outer contour of the legs 64, 65; And the shoulder 7 of the pad 61
1 and a side surface having a shape opposite to the contour of the portion of the base 18.

Once the pad 61 has been
When fixed to the assembly 60 using
A fastener 78 having a button-shaped head illustrated in (B), 13 (C) is received through the slot 66 of the leg 64, 65 and tightened in the hole 66A.
Is perforated in the collar 33 to further hold the clip 76 in the positive holding position. Fastener 78 also facilitates removal of clip 76 and facilitates access to the components of the assembly for maintenance. In addition, section 68 provides a suitable surface so that tab 40 can be bent to facilitate removal of retainer clip 76.

FIGS. 14, 15 (A) and 15 (B) show a preferred embodiment of a piston assembly 62 according to the present invention, wherein FIGS. 12, 13 (A), 13 (B), 13
As described with respect to (C), the friction module 60
Is fixed to the piston assembly 62 and receives the friction pad 61. As shown in FIG. 14, the friction pad 61 has a corresponding bore 8 at its center.
7 is fixed to the back plate 17 including The bottom surface of the friction pad 61 also includes a central bore 87A aligned with the bore 87.

The piston assembly 62 comprises a ring-shaped ceramic magnet 83 having a square cross-sectional shape used to hold the pad 61 in a fixed position. An index ring 91 having a profile slightly smaller than the diameter of bore 87 surrounds a central piston rivet 92 in piston assembly 62. Leaf spring 95 is connected to rivet 92 and septum 94. The index ring 91 is resiliently engaged with a base support in the piston assembly 62 by a ring wave spring 93. Although the piston assembly 62 is engaged with the friction pad 61 for braking, the index ring 91 remains in contact with the friction pad 6.
Includes an outer diameter surface that preferably slopes upwards toward the center of the rivet 92 to index one backboard 17.

As shown in FIG. 14, the pad 61 can be placed on the module 60 by sliding the pad 61 over the index ring 91 so that, as previously described, the legs 61 64, 65 (not shown)
Is arranged in the shoulder of the pad 61 which abuts the shoulder 71 of the pad. During installation of the pad 61 on the module 60, the wave spring 93 is at least partially compressed. When the pad 61 is installed, the bore 87 is substantially aligned with the index ring 91, at which point the corrugated spring 93 is completely uncompressed. For example, as shown in FIG.
Even if 2 is not engaged for braking, the index ring 91 will be biased forward toward the pad 61 and bore 87 to index the friction pad 61 once the wave spring 93 is fully decompressed. Is done.

FIG. 15B shows the piston assembly 62 engaged for braking. During braking, the rivet 92 acts pneumatically and moves forward to urge the leaf spring 95 into the septum 94. When pressed forward, the partition wall 94 contacts the back plate 17. If the ring 91 is not in partial contact with the outer diameter surface of the bore 87, the forward movement of the rivet 92 will
The index ring 91 is moved forward by contacting the outer diameter surface of the index ring 91. The index between the brakes holds the friction pad 61 in place and centers it, a force that causes misalignment of the pad 61 with respect to the relative rotating disc so that the friction pad 61 does not separate from the module 60 during braking. Absorb.

Referring to FIGS. 14, 15 (A) and 15 (B), the back plate 17 of the friction material pad 61 is
2 and a central tab 85 having an upwardly bent lip 86. The tab 85 is embedded in the pad 61 and is positioned adjacent the wide base 18 of the generally trapezoidal unit of the friction material pad 61 and within the periphery of the rotatable friction disk. Tab 8 as tab 56
5 is the friction material 6 of the friction material pad 61 due to the abrasion of the lip 86 of the tab 85 protruding from the friction material and the contact of the piston 92 with the relatively rotating friction disc.
1 emits a warning noise that pad 61 should be replaced when thickness is significantly reduced.

The inclined surfaces 73A, 73 of the legs of the collar 33
B and the corresponding surfaces 80A, 80B of the pad 61 have a suitable angle to ensure that the outer surface of the pad 61 remains in contact with the collar 33 during braking. The friction pad 61 is securely fixed in the collar 33 during the operation of the brake, because the inner surface 73 of the legs 64, 65
A, 73B and the sides 80A, 80B of the pad 61 are at an angle such that the lateral force generated on the pad 61 acts on the legs 64, 65 of the collar 33 at an angle exceeding 90 °. is there. Thus, pad 61 does not move in response to lateral forces on it and the forces that may be generated during braking by contact of pad 61 with an incorrectly positioned, relatively rotating disk.

FIG. 16 receives a friction module 60 having friction pads 61 and a substantially similar friction module base 100 coupled with an inverse interlocking device.
A, embodiment of 100B, wherein said reverse interlocking device allows pneumatic transport without the use of additional components commonly used in the prior art, such as, for example, module adapters.

FIGS. 17A and 17B show the module 1
00A, which is described in further detail, module 100A includes a base plate 102 having a generally trapezoidal shape with an extension 104 at a side end of base plate 102. Preferably, the top plate 103 integral with the base plate 102 covers the entire base plate 102 except for the extension 104. The top plate 103 includes inclined outer surfaces 105, each of which has a pneumatic transport port 106. In the illustrated relationship, module 100A includes an outer surface 105a having a pneumatic transport port 106. Referring to FIGS. 16 and 17 (B), the port 106 is connected to a piston bore 109, and the piston bore 109 is formed at the center of the module through an air passage 107 or a pipe material drilled in the module 100A. .

An air inlet port 108 at the base of module 100A connects to bore 109 and
It is connected to an inlet air passage 108A drilled at 0A.
With the piston assembly installed in bore 109, a sealed through connection from port 106 to port 108 is achieved. As shown in FIG. 16, when the module bases 100A, 100B are interconnected, the module base 100B is adjacent to the module base 100B as described below.
The members 108 and 108A are not included because the power is supplied from the port 106 of the OA to the module base 100B.

Module base 1 by the width of top plate 103
The interlock extension 104, which is narrower than 00A, has several slotted mounting holes 101. module·
The holes 101 of one extension 104 of the base 100A are symmetrically arranged with the holes 101 of the opposite extension 104 of the module base 100A. As shown in FIG. 16, the outer surface of the top plate 103 facing the extension 104 is the module base 100A of the module base 100A.
It has a profile that provides another reverse connection to B. The module base 100A in another reverse connection arrangement in which the respective inclined surfaces of the module bases 100A and 100B face each other and are flush with each other is referred to as the module base 10.
For connection to OB, an interlocking bolt 110 is received in one of the holes 101 in the module bases 100A, 100B.

This connection device is provided to match the pneumatic transport port to the facing sloping surface of the adjacent paired module. For example, as shown in FIG. 16, when module bases 100A, 100B are joined by bolts 110 at selected holes 101 in extension 104 of each module,
Side surfaces 105a of 0A and 100B are located in a face-to-face relationship. This positional relationship of the side surface 105a results in a match with the pneumatic transport port 106 located there, thereby providing a port 1 that matches the air passage 107 of the module.
06, the air inlet port 1 of module 100A
The air transport path from 08 to the bore 109 of the base 100B is completed. As a result, pneumatic transport between the modules is achieved without pneumatic fittings or tubing connections. In a preferred embodiment, port 106 includes an aerodynamic seal. It will be appreciated that the module base includes one or more slanted outer side surfaces and corresponding air passage air ports. The air passages described above connect to the piston bores in the module base to facilitate use of the same module base for braking, including discs of various sizes. For a module base that includes multiple ports, the only side port that contacts the side of the adjacent module base is the unsealed module port.

FIGS. 18A and 18B show modules and
Although two preferred embodiments of the base 100 are shown, the module base 100 is
A, 100B, similar in construction, but connected in an annular manner with reverse interlocking devices so that the brake can be actuated for different size brake assemblies. As shown, the slotted mounting holes and the profile sides of the module allow the same module base to be interlocked at various locations, so that the selected ramped surfaces are positioned adjacent to each other, resulting in brake actuation. Is possible for different dimensions of the brake assembly. In other words, the matched location of the air transport port 106 on the side 105 of the module base determines the perimeter dimensions of the brake assembly formed from a plurality of module bases interlocked together in an annular arrangement. .

[0041]

Even if the dimensions of the various members shown or described herein change, the thickness of the friction material pad 15 or 61 including the back plate 17 may be changed assuming that the other members correspond correspondingly. It is about 1/2 inch. Various conceivable improvements, changes in parts and materials, etc., obvious to those skilled in brake or clutch technology are possible within the spirit and scope of the present invention.

[Brief description of the drawings]

1 is a piston and cylinder assembly having a pad of friction material of the present invention and US Pat.
5 is an exploded perspective view of a friction module showing a module body attached to a general type of brake or clutch described in US Pat.

FIG. 2 is an exploded perspective view showing the relationship between parts in a preferred embodiment of a piston according to the present invention.

FIG. 3 shows the piston of FIG. 2 with the assembled part and the cylinder part of the present invention.

FIG. 4 is a cross-sectional view showing a relative relationship between a piston and a friction material pad in one preferred embodiment of the present invention.

FIG. 5 is a cross-sectional view similar to FIG. 4, showing another embodiment of the present invention.

FIG. 6 shows a two-piece holding pad made of a friction material according to the present invention.
It is a figure which shows the clip of a piece.

FIG. 7 illustrates a one-piece retainer clip of the present invention.

FIG. 8 is a plan view of the friction material pad of the present invention.

FIG. 9 is a side view of the friction material pad of FIG. 8;

FIG. 10 is a plan view of a torque collar for receiving the friction material pads of FIGS. 8 and 9;

FIG. 11 is a side view of the torque collar of FIG. 10;

FIG. 12 illustrates another preferred embodiment according to the present invention.
FIG. 4 is an exploded perspective view of a friction pad module having friction material pads showing the interrelationship of parts.

FIG. 13 is a view showing a part of FIG.
FIG. 13B is a plan view of the collar, FIG. 12B is a side view of the portion of FIG. 12 assembled according to the present invention, and FIG.

FIG. 14 is a cross-sectional side view showing the relationship between the friction material pad and the piston assembly engaging the friction pad module prior to placing the pad in the module in another preferred embodiment of the present invention. FIG.

FIG. 15 is a side view of a cross section of the part of FIG. 14, in which (A) shows a relationship between a friction module having a pad made of a friction material installed in a module in which a piston is not operated and a piston assembly. (B) is a diagram showing a relationship between a friction module having a friction material installed on a module pad and a piston assembly when the piston is operating.

FIG. 16 illustrates the interlocking between the interlocked friction module base body and the parts assembled as shown in FIG. 12 according to the present invention in a preferred embodiment of the present invention.

17 is a view showing a portion of FIG. 16, (A) is a side view of a friction module base, and (B) is a plan view of the friction module of FIG. 16;

FIG. 18 illustrates a friction module base interlock device according to a preferred embodiment of the present invention, wherein (A) and (B) each show a friction module base interlock according to a different preferred embodiment of the present invention; It is a top view which shows an apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Piston and cylinder assembly 11 Cylinder base plate 12 Piston assembly 13 Torque collar 14 Torque post 15 Pad 16 Synthetic friction material 17 Back plate 18 Base 19 Narrow base 20 Side surface 21 Permanent magnet 22 Tension tab member 23 Lip 24 arcuate portion 33 torque collar 34,35 upright torque leg 34a, 35a inner surface 36,37 retainer clip 38 continuous band 39 inwardly bent portion 40 opposing clip tab 41 head 42 inner end 43 retainer・ Clip screw 46 Cylinder 47 Fixture 48 Front surface 49 Cylinder body 50 Cylindrical chamber 51 Inlet port 52 Cylinder 54 Small ring-shaped permanent magnet 55 Center tab 56 Lip 60 Friction module 61 Friction material package C 62 Piston assembly 64, 65 Leg 66 Slot 67 Recess 68 Inclined portion 69 Interconnection 71 Cylinder 73A, 73B Inclined portion 73C Recess 76 Clip member 78 Fastener with button head 79B Shoulder 80A, 80B Outer surface 83 Ring permanent magnet 87 Corresponding bore 87A Central bore 91 Index ring 92 Central piston 93 Ring wave spring 94 Partition 100A, 100B Module base 102 Trapezoidal base plate 103 Top plate 104 Extension 105 Outer side surface 106 Air transport port 107 Air passage 108 Inlet port 109 Piston bore

 ──────────────────────────────────────────────────の Continuation of front page (72) Inventor Philip. R. Metcalf. Junior United States. Maine. Windham. Forest. Load. twenty one

Claims (37)

[Claims] 1. A friction material pad used in combination with a piston for a friction brake or clutch, a flat and substantially trapezoidal shape having a wide base fixed to a substantially flat back plate and inclined with respect to each other, a narrow base and side surfaces. A piston for a friction brake or clutch, comprising a unit of compact friction material in shape, said back plate including at least one tab extending beyond the wide base and terminating in an upwardly bent lip. Pad made of friction material to be used with. 2. The pad according to claim 1, wherein said back plate is integrally formed of metal. 3. The pad according to claim 1, wherein said back plate is integrally formed of steel. 4. The pad of claim 1, further comprising two tabs extending beyond said wide base and terminating in upwardly bent lips. 5. The tab extending beyond the wide base has a bent lip extending upward by a distance equal to a predetermined minimum thickness of the friction material by abrasion to warn of pad replacement. The pad of claim 1, wherein 6. A friction material pad according to claim 1, wherein the side surfaces of the friction material unit are flat and inclined at an angle between 30 ° and 45 ° toward each other. 7. Sides are flat and 33 ° and 34 °
7. The friction material pad according to claim 6, wherein the pads are inclined to face each other at an angle between. 8. A unit of substantially flat, trapezoidal shaped friction material having a compact wide base, a narrow base and side surfaces fixed to a substantially flat back plate and inclined toward each other, and at the front of a friction brake or clutch. A fixed torque collar, wherein the back plate includes at least one tab extending beyond a wide base to an upturn lip.
Combination with color. 9. A pair of torque posts extending from the torque collar at the wide and narrow bases of the generally trapezoidal unit of friction material to limit lateral movement of the friction material unit and the backplate. 9. The combination according to claim 8, wherein: 10. A pair of torque legs extending from the torque collar have inner surfaces that slope toward each other to limit lateral movement of the friction material and to clamp the sides of the generally trapezoidal shaped unit of friction material. 9. The combination according to claim 8, wherein: 11. A retainer clip having a portion positioned to abut a wide base of a generally trapezoidal shaped unit of friction material to restrain radial movement of the friction material, wherein the portion of the clip is 9. The combination according to claim 8, wherein the friction material is movable to an open state to allow radial movement of the friction material. 12. The combination of claim 11, wherein the retainer clip is arcuate in plan and is attached to the torque leg. 13. The combination according to claim 11, wherein the clip portion and the friction material are movable by hand. 14. The combination according to claim 11, wherein the retainer clip comprises two homogeneous arcuate members. 15. The combination of claim 11, wherein the retainer clip is a one-piece clip comprising a continuous bow band. 16. The combination according to claim 10, wherein the inner surfaces of the torque legs are flat and are inclined opposite one another at an angle between 30 ° and 45 °. 17. The combination according to claim 10, wherein the inner surfaces of the torque legs are flat and are inclined opposite one another at an angle between 33 ° and 34 °. 18. The combination according to claim 11, wherein the retainer clip has an outwardly extending end for bending the clip into an open state. 19. A friction material pad used together with a piston for a friction brake or a clutch, comprising: a pair of shoulders;
Inclined first and second inclined units comprising a flat, substantially trapezoidal shaped friction material unit having a wide base and a narrow base, each of the shoulders extending from the wide base to the narrow base.
Extending from the narrow base to the side of the at least one first friction material unit is secured to a substantially flat back plate, the back plate terminating in an upwardly bent lip over the wide base. A friction material pad comprising a tab. 20. The unit of friction material further has at least one buried second tab, a distance equal to a predetermined minimum thickness of the friction material due to wear, for the purpose of issuing a warning indicating replacement of the pad. 20. The pad of claim 19 having a lip that extends upwardly and is bent. 21. The method according to claim 1, wherein the first and second side surfaces are flat and inclined toward each other.
9. The pad according to 9. 22. A flat, substantially trapezoidal unit of friction material having a pair of shoulders, a wide base, and a narrow base, each of said shoulders extending from said wide base to a first side surface. Extending from the narrow base to the first and second side surfaces, the first and second side surfaces are inclined to face each other, and the friction material unit is bent upward beyond the wide base. Combination of a unit of friction material comprising at least one first tab extending into and terminating in a lip, and a torque collar secured to the front of a piston of a friction brake or clutch. 23. The pair of torque legs extend from a torque collar, each torque leg having a shoulder, a first sloped inner surface extending from the shoulder, and a second sloped surface extending from the first inner surface. An inner surface, wherein the first inner surface of the shoulder and the leg has an outer shape matching the contour of the shoulder and the first and second side surfaces of the friction material, respectively. 23. The combination according to claim 22, wherein the combination is provided for precisely positioning the friction material in the collar. 24. The first and second side surfaces of the friction material are inclined toward each other at a predetermined angle, so that when the friction material is pressed against the leg of the collar during braking, the force is reduced. 23. The combination of claim 22, wherein the combination is provided at least substantially at right angles to the legs to restrain lateral movement of the pad relative to the collar. 25. In a combination wherein each of the pair of torque legs includes a first outer surface extending from the shoulder and a second outer surface extending from the first outer surface, the retainer clip may be attached to the wide base of the friction material. A portion having a shoulder and a contoured portion extending over the first and second outer surfaces of the leg for the purpose of restraining the clip against the leg and securing the pad in the collar; 24. The combination of claim 23, wherein the portion is movable to an open state to allow radial movement of the friction material. 26. The combination according to claim 25, wherein the clip portion and the friction material are movable by hand. 27. In a combination in which the first and second outer surfaces of each of the legs are substantially arcuate in plan and have recesses formed in the outer surfaces of the legs, the clamping means positioned in the recesses comprises: 26. The combination according to claim 25, wherein the combination is secured to the body to retain a clip secured to the leg and abutting the wide base. 28. The combination of claim 25, wherein the clip has an outwardly extending end so that the clip can be bent to the open position. 29. A piston assembly in a friction brake or clutch for use with a friction material pad secured to a torque collar, said collar secured to a front surface thereof, said pad being a wide base, a narrow base. A flat, substantially trapezoidal shaped, compact friction material unit having sides secured to a substantially flat back plate, said back plate being a piston assembly in a piston assembly having an inner surface forming a central bore. A support surface formed with a piston receiving opening for receiving a piston, and an index surface elastically coupled to be supported by elastic means, the index surface being a pad relative to the piston assembly. Pads are secured to the collar and the collar is used to control and prevent lateral movement of the piston. A piston assembly coupled to the assembly and facing the central bore of the back plate when biased by elastic means in the direction of the central bore of the back plate. 30. The piston assembly according to claim 29, wherein the elastic means is a corrugated disc spring. 31. The piston assembly according to claim 29, wherein the index surface is formed in a ring shape having an outer diameter smaller than a diameter of an inner surface of the back plate. 32. A friction material modular base for receiving a torque collar including a friction material pad, the pad comprising: a wide base; an end side surface of a narrow base secured to a substantially flat back plate; A frictional material module base comprising a flat, substantially trapezoidal shaped compact frictional material unit having a substantially trapezoidal shaped module base;
A base plate having a substantially trapezoidal shape, a top plate covering the base plate except at the base end side of the base plate to form a piston bore in the center thereof with the base plate, and at least covering the top plate and the bottom plate. A friction material module base, comprising: at least one sloped side at the sloping portion; an air port at at least one sloped side; and an air passage extending from the air port to the piston bore. 33. The module base according to claim 32, wherein said air port further comprises an aerodynamic seal. 34. The module base of claim 32, comprising an air inlet port at said base surface and an air passage extending from said air inlet port to a piston bore. 35. The module of claim 32, having a plurality of sloped side surfaces, at least one of the side surfaces including an air port connected to the piston bore via an air passage. base. 36. A module comprising a plurality of friction material module bases disposed adjacent to each other, each of the module bases having a substantially trapezoidal base plate;
The base plate is covered with the base plate except at the base side edges to form a piston bore at the center thereof with the base plate so that each side end of the base plate forms a slotted interlocking region. A top plate, at least one sloped side surface in the covered portion of the top and bottom plates, an air port in the at least one sloped side surface, and an air passage extending from the air port to the piston bore. A brake device for coupling a first module base with an adjacent second module base such that the first module base and the second module base are oppositely disposed in an interlocking area having slots of the first and second module bases; The air port on at least one of the inclined surfaces of the first and second module bases is matched by the coupling means. , At least one of the first module base surface facing the second module based at least one inclined side, and substantially modular brake system, characterized in that the same surface. 37. The apparatus of claim 36, wherein at least one of the module bases further includes an air passage extending from the air inlet port to the piston bore, and an air inlet port at the base surface.